A Guide to Self Build Insurance | Home Extensions | Renovations - Page 7
11 March 2025

A guide to self build insurance

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By Self Build Zone
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Some Q&As

A guide to self build insurance: Site Insurance is necessary to protect your investment when you’re carrying out a renovation, conversion, extension, or self build. The policies cover the new work, existing structure and rest of the site. It protects against the likes of losses, fire, theft, flood, storm damage, vandalism and accidental damage.

To risk it without the proper insurance in place could leave you in financial dire straits.

Conversations are happening daily across many of the self-build networking groups on social media, and it’s a subject that is always at the forefront, with the most common questions being, ‘My home insurance company will not cover my insurance for my self-build or extension. ‘ Without adequate cover, you are at risk.

Our guide recently published in Homebuilding & Renovating Magazine explains everything you need to know about self build insurance, from why and when you need it and what your policy should cover.

Some common questions…

Do I Really Need Self Build Insurance?

We are used to insuring our most valuable possessions these days. Yet every year lots of people build or renovate their own homes without any insurance — a project costing tens and even hundreds of thousands of pounds. For many of them, the gamble pays off — if indeed they even knew they could insure their project in the first place. But it can be an extremely false economy.

Building sites are risky places – not just for accidents but also for things like theft – and anyone taking a project like this seriously needs to account for the bad things that might happen, as well as the fantastic and exciting things that will.

Beyond an insurance policy providing peace of mind that is worth its weight in gold, lenders and especially those consistently working to help self builders, are increasingly demanding proof of the existence of a suitable policy before releasing funds.

Won’t My Main Contractor Have Insurance?

There’s no guarantee that your builder/main contractor will have insurance — you’d be surprised at just how many builders and tradespeople don’t carry any/or adequate insurance for the work they do, especially if they work ‘cash-in-hand’.

Those carrying out a project by using a builder with a single contract may feel that, as the builder has their own insurance policy, there is no need to go to the expense of a policy in their own name. They might be right, but they should check the details of the builder’s policy to firstly make sure that it’s current and secondly, that it is sufficient to cover for any eventuality.

Even if the builder’s policy is technically sufficient, the whole business of self building is to get what you want and to be interested and involved in the process, and the chances are that at some point you will opt to buy your own materials such as kitchen units, sanitaryware or even plumbing equipment.

But if any of those items get stolen or damaged, because the builder didn’t buy them and never had title to them, they will not be able to claim for them. So, it really does make sense to have your own self build insurance policy.

What If I’m Using Subcontractors?

If you are building using subcontractors or direct labour, then technically you are seen to be the main contractor and you are deemed to be employing all of the people working on the site. Even if the subcontractors do carry professional insurance, the chances are that if they have an accident, they will see your insurance as the best option for recompense and if you haven’t got it, then you’ll be in trouble.

You can also review some of our specific product pages for in-depth information on the rest of our Self-Build Insurance website.

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